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We asked a half-dozen insiders to expose little-known facts the airline industry would rather you didn't think about. They shared some pretty eye-opening stuff. By Alexander Basek, Thursday, September 3, 2009 1. "Airport luggage scales often lie." It's bad enough that the airlines charge a fee for overweight luggage, varying from $39 to $300 per bag industrywide. But it's galling that they may also hit you with the fee by mistake. At JFK last November, New York City's Department of Consumer Affairs found that 14 percent of the airport's scales were not properly calibrated. At Boston's Logan airport, 10 percent of the scales recently inspected gave incorrect readings. The South Florida Sun – Sentinel has discovered numerous busted scales at area airports. And the list goes on. What to do? Stand up for yourself, especially when a scale barely tips the balance into the "overweight" category. Brandon Macsata, executive editor of the D.C.-base...